Speed Converter

Convert km/h, mph, m/s, and knots instantly.

Speed Converter

Use keyboard: Enter to convert, Escape to clear

From

Result

How to Use This Converter

Step-by-Step Guide

1. Enter Value: Type the speed you want to convert in the "From" box.

2. Select Units: Choose your starting unit (e.g., "km/h") and your target unit (e.g., "mph").

3. View Result: The conversion happens automatically. The converted speed will appear in the "To" box.

Example: To convert 100 km/h to mph:

- 1. Enter **100** in the input field.

- 2. Select **km/h** from the 'From' dropdown.

- 3. Select **mph** from the 'To' dropdown.

- 4. The result **62.1371** will instantly appear.

Understanding Speed Units

Speed is the measure of how quickly an object moves, defined as distance traveled over a period of time. Different fields and regions use different units.

Kilometers per Hour (km/h) & Miles per Hour (mph)

These are the most common units for road travel. Most of the world uses **km/h**, while the United States, United Kingdom, and a few other countries use **mph**.

Meters per Second (m/s)

This is the standard (SI) unit for speed, used widely in science, physics, and engineering. It measures the number of meters traveled in a single second.

Knots (kn)

A knot is a unit of speed equal to one nautical mile per hour. It is used extensively in maritime and aviation navigation.

Speed Conversion Formulas

Here are the formulas used for converting between common speed units.

From	To	Formula
km/h	mph	value × 0.621371
mph	km/h	value / 0.621371
km/h	m/s	value × 0.277778
m/s	km/h	value * 3.6
km/h	knots	value × 0.539957
knots	km/h	value / 0.539957

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